Hair brush



FIG. 1 is a top perspective view of a hair brush showing my new design;

FIG. 2 is a front elevation view and a rear elevation view thereof;

FIG. 3 is a right side elevation and a left side elevation view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the article and form no part of the claimed design. 

CLAIM I claim the ornamental design for a hair brush, as shown and described. 